C++(씨쁠쁠)(cplusplus)-백준(baekjoon)(BaekJoon)코딩 1316번:그룹 단어 체커 답

#include <iostream>
#include <string>
using namespace std;
int ac[26],cnt,T,c;
int main(){
    string k;
    cin >> T;
    for (int i = 0; i < T; i++)
    {
        cin >> k;
        c = 0;
        for (int i = 0; i < k.size(); i++)
        {
            if (ac[k[i] - 97]>=1 && k[i]!=k[i-1] && i!=0)
            {
                c = 1;
                break;
            }
            ac[k[i] - 97]++;
        }
        if (c==0)
        {
            cnt++;
        }
        for (int i = 0; i < 26; i++)
        {
            ac[i] = 0;
        }
    }
    cout << cnt;
}